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Re: DS: abralgebra [#permalink]
04 Nov 2005, 18:42

duttsit wrote:

Is 1/x < 1/y for integers x,y ?

(1) x^2 + y^2 = 25 (2) xy = 12

Is 1/x < 1/y?

Implies that x has to be bigger than y for the equation to hold.

(1) x or y could be +- 3 or +-4. Insufficient.
(2) xy = 12, which implies that both integers could either be negative or positive. But it still doesn't tell us if x or y is bigger. Insufficient.

Both together. Stil not sufficient. My answer is still E.

Darn why didn't I see this thread earlier - good question Duttsit. _________________

"Wow! Brazil is big." â€”George W. Bush, after being shown a map of Brazil by Brazilian president Luiz Inacio Lula da Silva, Brasilia, Brazil, Nov. 6, 2005